<template>
  <div class="progress-circle">
    <svg :width="radius" :height="radius" viewBox="0 0 100 100" version="1.1" xmlns="http://www.w3.org/2000/svg">
      <circle class="progress-background" r="50" cx="50" cy="50" fill="transparent"/>
      <circle class="progress-bar"
              r="50" cx="50" cy="50"
              fill="transparent"
              :stroke-dasharray="dashArray"
              :stroke-dashoffset="dashOffset"
      />
    </svg>
    <slot></slot>
  </div>
</template>

<script type="text/ecmascript-6">
export default {
  props: {
    radius: {
      type: Number,
      default: 100
    },
    percent: {
      type: Number,
      default: 0
    }
  },
  data () {
    return {
      dashArray: Math.PI * 100
    }
  },
  computed: {
    dashOffset () {
      return (1 - this.percent) * this.dashArray
    }
  }
}
</script>

<style scoped lang="stylus" type="text/stylus">
@import "~common/stylus/variable"

.progress-circle
  position: relative
  circle
    stroke-width: 8px
    transform-origin: center
    &.progress-background
      transform: scale(0.9)
      stroke: $color-theme-d
    &.progress-bar
      transform: scale(0.9) rotate(-90deg)
      stroke: $color-theme
</style>
